Annealing-box.



FUGA

WITNESSES P. vE. HUNTER.

ANNEALING BOX. APPLICATION FILED'IUNE I8. |915.

Patented Sept. 21, 1915.

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FIG. 2

INVENTOR Q Q C) COLUMBIA PLANDCIRAPH cD..wAsHlNa'roN. D. c.

P. E. HUNTER.

ANNEALING BOX.

APPLICATION FILED JUNE I8. I9I5.

1,154,400. Patendsept. 21, 1915.

2 SHEETS-SHEET 2.

ETTEE STATES PATENT oEEioE.

BERCY E. HUNTER, oEPITTsEUEGH, PENNSYLVANIA.

ANNEALING-B'OX.

To all 'whom t may concern.:

, Be it known that I, PERCY E. a citizen of the United States, residing at Pittsburgh, in the county of Allegheny andv State of Pennsylvania, have invented certain' new and useful Improvements in A11- nealing-Boxes, of which the Vfollowing is a specification.

My invention consists of an improvement in annealing boxes'adapted for the usual uses-of such devices, and it has for its object to provide means for maintaining the shape of the box by an internal supporting frame and adapting it to resist the deteriorating effects of heat and use. A

Owing to the unequal expansion and contraction of the outer shell and inner supporting framework, lbecause of differences between external vand internal heat, I have found that it is desirable to so combine them as to permit the shell, or portions of it, to move away from or toward the support, within the liinitationsof practical working conditions. I have therefore so arranged these portions of the entire box to provide for such conditions and at all times maintain an internal support which will continuously conform to the'interior shape of the shell, but in loose relation thereto.

Generally stated, the improvement conf sists in providing a supporting framework,

so incorporated with the box as to become a part thereof, and having 'an upper top supporting portion, fitting underneath the box top, but not connected with it in such a manneras to rigidlyy control it, whereby to allow for ample range of expansion and contraction, and for ultimate regularity of shape.

Referring to the drawings, which show preferred forms of the invention, Figure 1 is a view of my improved box in vertical section, partly in elevation. Fig. 2 is a cross section on the line II. II. of Fig. 1. Fig. 8 is a view similar to Fig. 1, showing a modified construction. Fig. 4 is a cross section on the line IV. IV. of Fig. 3. Fig. 5 is a sectional detail view showing the loose connection between the overhanging end of the frame member and the top.

Referring to the construction of Figs. 1 and 2, the sides 2, 2, arched top 3 and ends et, 4, are preferably formed integrally by suitable welding operations, preferably reinforced at the corners 5, and of customary conventional or standard form. Reinforcspeeication of Letters Patent.

HUNTER, i

ing members, as angles 6, are riveted across the ends, and lifting eyes or hooks 7 are secured to the top at suitable locations, to facilitate handling. Longitudinal base reinforcements 8, of angle or other suitable Patented Sept. 21, 1915. Application filed .Tune 18, 1915. Serial No. 34,8729. l

form, extend along thebottom of each side ,I

2, whereby to stiffen the box and provide good bearing portions. Secured to said angles 8 and to the sides at their bottoms, by riveting or otherwise, area plurality of upstanding supports 9, which may be conveniently formed of pairs of angles with .Y

one yof their flanges slightly spaced inwardly from the inner face of the box walls and tops, the other flange extending inwardly and effectually bracing the supports. These frames are continued around underneaththe top, as shown, following the curvature thereof, and are sufficiently close to provide amplev supporting strength.

sired, are provided stiffening cross plates 9, of any desireddepth. Extending across the top portionsjof said frames is an arched plate 10 which yis riveted to the` flanges of `angles 9 Vat various points, and which is thus Aa portion of the supporting frame. Plate 10 is sufficiently wide to engage underwith the box top to prevent sagging, while ample opportunity is provided at all times for free expansion or contraction of the outer box shell, which is subjected to the `greatest heat, preferably independent of any rigid connection with the supporting framework and its top curved plate. If desired, the frame and shell may be connected, loosely at the end portions of the supporting plate as shown, or if preferred, at infrequent intervals, so as not to prevent the desirable relative expansion and contraction of the shell.

The construction of Figs. 3 and 4 is similar in the main to that just described, the parts' being referred to by similar numerals Between and riveted to the angles 9, if dehaving the exponent a In place of the continuous arched plate lO, however, I use a series of longitudinal structural members, as angles 10u riveted to the frame members 9i* with the flanges confronting the inner curved face of the top, the companion angles eXf tending inwardly and being cut out for clearance, as at 10b. The ends of the supporting angles 10a are loosely connected with the top, as at 1l, in the same manneras above described.

The construction, operation, advantages and utility of the invention will be readily understood by those accustomed to the use of annealing boXes. Itis comparatively simple, cheap, andy durable, and 'proyides amplel compensations'for the usual strains and requirements of devices'of this type.

`What l`I claim is:

1Q An annealing boX having anV inner topsupporting frame secured to the inner bottom portions of the sides and extending across and along underneath the top,"and 'spaced inwardlyfthereof. f

2. 'An'annealing boX having an inner topsupporting frame secured to the'innerbottom portions of the sides and extending across and along underneath the top, spaced inwardly thereof andadapted to allow eX- paron and contraction of'portions of the s e An annealing boX having a top-supporting frame securedto the inner rbottom portions of the sides and 'extending across andI alongunderneath the top with an intervening space buty unconnected therewith.

4. 'In' combination with an annealing boX Copies of this patent may be obtained for having ends, sides, and an arched top; inner framing members secured to the inner botto'm portions of the sides extending continuously across underneath the top, and provided 'with a longitudinal top-supporting member.

5. In combination with an annealing box having ends, sides, and an arched top; inner framing members secured to the inner bottom portions of the' sides extending continuouslyv across underneath the top, and provided with a 'longitudinal top-supporting membersecuredto'the top at its ends.

6. In combination with an annealing box having ends, sides, and an arched top; inner framing members secured to the inner bottom portions of the sides extending continu* ously "across underneath the top, and provided with a longitudinal top -supporting member lying adjacent the inner surface of the top but' unconnected therewith whereby to provide for relative movement of said parts.

7. In combination with an annealing boX havingrv ends, sides, and an arched top; inner 'framing'members secured to the inner bottom portions' of the'sides extending continuously yacross underneath the top, and provided "with 'a series of longitudinal top-supporting members.

l In testimony whereof I hereunto aHiX my signature inthe presenceof two witnesses.

y n PERO/Y E. HUNTER.

Witnesses:

ve cents each, by. addressing the f Commissioner of P atents,

Washington, D. Ca, s 

